Malicious PDF — malware analysis report

Static analysis result for SHA-256 b078be10600a2ac5…

MALICIOUS

PDF

44.2 KB Created: 2020-08-22 00:17:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fcd73af79776b38f7a3bf62103c027c SHA-1: cf0a08702bc9bcec97660456cc4674d025fa01e7 SHA-256: b078be10600a2ac5a0ce82c2008435aed4bf9a701bc84ff59c6094f26f2e8664
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Metformin and black seed oil' and references wkhtmltopdf, suggesting a lure for users interested in health topics. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=metformin+and+black+seed+oil
    • http://kaxip.mindfuldemocracy.org/uploads/1/3/1/4/131408791/wigagurabegisopo.pdf
    • http://files.nafsijewels.com/uploads/1/3/0/8/130813799/2353070.pdf
    • http://jolexaba.nownotwhen.com/uploads/1/3/1/1/131164250/monanajaj.pdf
    • http://vudujuz.mypeoplecommunity.org/uploads/1/3/0/7/130740249/711535.pdf
    • https://cdn.shopify.com/s/files/1/0439/4146/2174/files/python_3_soket_kind_for_icmp.pdf
    • https://cdn.shopify.com/s/files/1/0460/3340/4068/files/bluestacks_3._56._76.pdf
    • https://cdn.shopify.com/s/files/1/0435/5211/2804/files/49971513496.pdf
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/48403108025.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5159/files/31518915449.pdf
    • https://cdn.shopify.com/s/files/1/0435/6535/1071/files/fun_home_alison_bechdel_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0435/6577/7059/files/7292508391.pdf
    • https://cdn.shopify.com/s/files/1/0430/6731/0231/files/lettre_de_motivation_en_anglais.pdf
    • https://cdn.shopify.com/s/files/1/0434/7510/7992/files/a_practical_english_grammar_exercise_1.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060e5.bin
5044adb91d6c38e9fdab05796c35c06ffbfc3c655e38ee6a55d417c609ab02eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60E5 5164 bytes
font_01_sfnt_off00007257.bin
8857ca8755646cbad0d9559203a43630f2e66fbbae4d9b771f44150121a04469		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7257 10408 bytes
font_02_sfnt_off000095f9.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95F9 4324 bytes

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